SMJJ Anti Dustwith Breathing Valve, Skin-friendly Unisex Mouth, Reusable & Washable For Running, Cycling, Outdoor Activities Black 10pcs

I ordered these and they took over20 weeks to arrive. Upon arrival, it was noted that they were just glued together and not sewn together. Also, the material was a flimsy foam product, not the neoprene that was reported. I would not order them again.

Keep splitting apart down the middle, contacted the supplier to no avail